4-channel relay outputs each of 5.08-3P Terminal Blocks - Output is normally open and normally closed the control panel can be used AC or DC 12V - XH the control terminal for Terminal Blocks that can control and cycle control point to point can also be fully closed to fully open. - Red for the power indicator the other four corresponding four relays glows green when the corresponding relay is closed Key Description: S1: corresponds to the first relay the relay after power fully closed press once S1 pull and then a close then pull so the cycle Triggering process for ON → OFF → ON → OFF S2: corresponds to the second relay the relay after power fully closed press S2 pull then a close then pull so the cycle Triggering process for ON → OFF → ON → OFF S3: corresponds to the third relay the relay after power fully closed press S3 pull then a close then pull so the cycle Triggering process for ON → OFF → ON → OFF S4: corresponds to the fourth relay the relay after power fully closed press S4 pull then a close then pull so the cycle Triggering process for ON → OFF → ON → OFF S5: full-off switch: Press once all relays all closed S6: full switch: Press once fully open all relays S7: cycling switch power relay fully closed pull press S1 S2 and then a pull .... so the cycle Trigger the process: fully closed → J1 open → J2 open → J3 open → J4 open → fully closed → J1 open → J2 open → J3 open → J4 open → fully closed